By 1952, the Democats had held the White House for 20 years. The nation was looking for change.
Neither Stassen nor Chandler could hardly be considered as "A" list Presidential contenders, however, between these two second tier candidates, the voters pick Stassen. The parties picking these two candidates would be a shock alright, to the parties and to the nation.
Harold Stassen was actually a major player, for a time, in the 1948 pre-election season, with polls showing he would defeat Harry Truman.
The election establishes Lyndon Johnson as a major force in the Democratic Party, after the very capable campaign he ran as the Vice Presidential nominee.
Stassen and Lodge win handily.
Stassen/Lodge 311
Chandler/Johnson 220